Bearing for car doors



1 a v wm v m 2 3 Jan. 13, 193 1. 7 A. WASBERG ET AL BEARING FOR CAR DOORS 5; 1927 3 Sheets-Sheet 1 Filed Dec Jan. 13, 1931. A. WASBERG ET AL BEARING FOR CAR DOORS Filed Dec. 5. 1921 3 Sheets-Sheet 2 'INVENTOPS? 9X51. Wesazes KEN/V5 THJ 705W Jan. 13, 1931. A. WASBERG ET AL 1,733,416

. BEARING FOR CAR DOORS Filed Dec. 5, 1927 3 Sheets-Sheet 3 ff/VI/E/V Toes 9X51. M55596 KENNETHJ 7Z 5//\/ Patented Jan. 13, 1931 UNITED r STATES.

P T NT j AXEL WASBERG AND KENNETH J. roianv, or" cnrcl eo, ILLINOIS, AssIeNons ro 0mm COMPANY, or cnroneo', I LInoIs, A conrona'rron or ILLINOIS BEARING rose can nooiis Application filed December 5, 1927. Serial No. 237,786. H v

This invention relates'to a car door, and

concerns itself primarily with bearing means for the door and means for controlling the same against accidentalsliding movements.' 7 It is among the objects of this invention to provide a unitary structure in which'the door and the bearingsare shipped in assembled relation and ready for application to-the car. It is also an object of thisinvention to provide a structure iniwhich the door is always balanced upon-itsgbearings with provision for preventing accidental sliding movements, and for controlling-the relative movements of the door and bearings: I

WVith these and other objects in view'which will become more apparent in the following description and disclosures, this invention comprises the novel structure and combina tion of parts hereinafter described and more particularly pointed out and defined in the appended claims.

a In the accompanying drawings, which illustrate a preferred embodiment. of this invention and in which similar reference numerals refer to similar features in the different views: p

Figure l is a fragmentary side elevational view of a house car having a sliding door involving this inventioncand showing the door in closed position, v 1 r I j a Figure 2 is a View similar to Figure 1 showing the door in open position;

Figure 3 is an enlarged fragmentary elevational viewvof the lowerpart of the door and the supporting track; 1

Figure 4 "is an enlarged sectional view taken upon the lineIV-JV of Figure 3;

Figure 5 is an enlarged sectional view taken upon the line VV of Figure 3 looking in the direction of the arrows Figure G is an enlarged sectional view taken upon the line VI VI of Figure 3' and lookin in the direction of thearrows; 1 f t Figure 7 is an enlarged sectional view taken upon the line VII,VII of .Figure'3 looking in the direction of'the arrows; i

Figure 8 is an enlarged top *planview of the carrier member; a

igure 9 is a side elevatienal view'of the carrier meniber;- s a r Figure 10 is an end elevational viewofthe carrier member showing its retaining and slidable connection withthe door; 7

Figure 11 is an enlarged top plan viewof the retaining castings at thelower'ends of the door;: i t Figure 12 is an enlarged side elevational view of the casting, and

view of the casting.

I the drawings, there is a Figure 13 is an enlarged end elevational shown a car door 1 which may consist of meta-1 0i" wood of any 7 3 approved construction. Along one margin of the door,'-in' the present instance along the lower margin,there extends a'pair of spaced coacting membersQand 3 of angular formation. The member 3 has a vertical portion 3 which is attached to the door, a short horizontal portion 3'? which terminates in an arcuate bend having'anoutwardly flaring wall 3." The member 2 is provided with a vertical attaching portion 2 attached to the door in superposed relation with the attach- 7 ing portion 3 and a horizontallyextending portion 2 terminating in a downwardly di-' rected flange having an outwardly flaring wall 2; These flaring or divergent walls 2 and 3 form a V-shaped track upon-the lower'margin of the door,'andthe space 4 between these coacting members forms a guideway for receiving the extension 5 of a carrier element 6,

' The-carrier element 6 is f best shown in Figures-8m 10', and in referring to said figures itwill be noted that the same comprises end prongs. 7 and intermediate prongs 8,

vwith rolling elements 9 rotatably retained between the-prongs 7 and 8. The aforementioned extension 5 which extends into the guideway'l through a restricted throat just above the trackhas a horizontally directed head slidably interlocked in said guideway,

since this horizontally directed head12 normally lies between the horizontal portions 2 and 3 of the track members 2 and 3 and prevents the carrier from accidentally dropping'out at'any time."'-The'%'head 12, how} ever, travelslfreely inth'eguid e'way and does not interfere with'the rollers contacting-the diverging track.

Lee

The track formed by the diverging walls g 2 and 3 is closed at its ends by end castings or members 13 (Figures 11-13) which pre vent spreading of the tracks and also retain the rollers. Each end casting is provided with an attaching flange 14: that is secured to the;door atthe end of the track. From one side of the casting there projects a V;

shaped lug 15 that fits between the track members 2 and3 and is secured theretoas shown in Figure 5. The casting is also providedwith a base portion 16 best shown in Figure 13, and this base portion has depending guide portions 17 and 18 that. extendwill be noted that the carriers 6 are located upon opposite sides of the two clips 20 with the result that relative longitudinal movement between each carrier and the door is confined to the distance between the end casting 13'and a clip 20 which is slightly less than one-half the width of the door. :It also will be appreciated that the endcastings and intermediate clips"20 prevent spreading of thetrack members2 and 3, the divergence of which be properly adjusted in the first instance to provide the desired relative movement of the door and rolling elements.

.-A door that is mounted upon anti-friction rollers will accidentallyslide through shunt.- ing or the like and is likelyto ride oil the track or distort and break the end members. For this reason, it is desirable to provide means for automatically locking the door in its open or closed position against such accidental movement. To this end, a locking detent 21 best shown in Figure 7 is pivoted upon a horizontal pivot 22 carried by a suitable casting 23 secured to the door substantially at the center line thereof, although the same may be placed atany convenient positions The detent 21 is provided with a closed position.

depending locking portion 24' adapted to swing of acasting 26. It will be noted that the recess 25 is formed between two projections having outer bevelled surfaces, as indicated at 27,with the result that as the door is moved along the track, the detent 21 upon encountering a casting 23 will rideoutwardly upon the bevelled surface and autoniati cally drop into the locking recessbyj gravity and lock the door against accidental sliding movement. a The detentis adapted to be manually lifted out of the recess when its-isdesired to mov'e'the door. In the presentinstan ce,-we have shown two castings 23 so located that thefdoor'may be locked against accidental movement in either itsopn or into a recess 25 formedin theedge Referring now to Figure 10 it will be noted that the diverging track members 2 and 3 on the door contact with the rolling elements upon points of a chord which is less than a diameter. This results in reducing the relative longitudinal movement between the door and thelrollers. In the present instance, the door travels about one and a half times as fast as the rollers, but this rate maybe varied by changing thefdivergence of the track menibers 2 and 3. By properly reducing the relative'movement between the door and rollers, the travel of therollers may be so limited as toavoid abutting the clips 20 and causing a braking and retarding action through sliding on the track. It will be noted, with reference to Figures 1 and 3, thati whenthe door is closed, the rollers on the left are spaced a short distance from the clip 20-while the rear or right hand rollers are, spaced a short-distance from the'end closure, showing that the relative movementof the door and rollers is not great enough to bringthe rollers into contact witheither the end castings or the intermediate clips 20.. Likewise whenthe door is open, as shown-inFigure 2, the rollers are a shortdistance from the aforementioned parts.- It should also be noted that the relative movement between the door and rollers is not suflicientto cause an 'overbalance of the door, so that the dooris always supported upon each side of its center. I

It will be understood that the roller'carriers 6 0n accountof their enlarged heads 12 in the guideway are retained from falling out,

so that the roller bearings anddoors may be shipped and handled as a unit. The end closures and-the-intermediate'clips also retain the carriers duringoperation and provide a separate passage for each in the guid'ew'ay.

We are aware that many changes may be made',.and numerous details ofconstruction may bevaried through awide range without departing from the principles of'this invention, and we, therefore, do not purposelimiting the patent granted hereon, otherwise than necessitated by thei'p'rior art. vWe claim as our inventionzl 1. The combination witlra car door, of

means providing a guideway at one margin of the door, a carrier having means overlapplng a portion of said guideway and slidably interlockedin saidfguideway,-and an antifriction means rotatably mountedin said carrier. T" j i q 2. In a car do'or spaced'coacting members at one margin of the door-providing a guideway and a track, a pair of carriers,eachhaving an L-shaped extension extending into said guideway, said eXtension'and members having relatively slidably interengaging parts, androllingelements rotatably mounted in said carriers for engaging said track. 3. In a car door,'a' pair of spaced angular members secured to one margin of the door for providing aguideway therebetween, the

' into two parts, and an anti-friction element margins of said members flaring outwardly to provide a V-shaped track, a pair of spaced carriers each having an extension projecting into said guideway, said extensions having heads slidably retained in said guideway, and an anti-friction element rotatably supported. in each carrier for engaging said track.

4. In a car door, a pair of spaced coacting members secured to one margin of the door providing a guideway therebetween with a restricted throat, the margins of said members flaring outwardly to provide atrack below said throat, a carrier having an extension projecting into said guideway and having means within said guideway for slidably retaining the same, and an anti-friction element rotatably supported in said carrier for con tacting with said track.

5. In a car door, a pair of spaced coating members secured to one margin of the door and having a guideway therebetween, a carrier having an extension projecting into said guideway and having means within said guideway overlapping said guideway for re taining the carrier, and an anti-friction element supported by the carrier.

6. In a car door, a pair of spaced coacting members having diverging walls forming a track, with a guideway above said track, a

carrier having an extension projecting into p said guideway, said extension having means slldably interlocked 1n said guideway, and

an anti-friction element in said carrier having rolling engagement with said diverging walls.

7. In a car door, a pair of spaced cooperating members secured to one margin of the door and having diverging walls forming a track, anda guideway above said track, a roller carrier having an enlarged head slidably retained in said guideway, and enclosures for said track having means extending between said diverging walls for bracing sald track and retaining said carrier.

8. In a door, a pair of spaced co-operating members secured to one margin of the door and having diverging walls forming V-shaped track, and a guideway above said tracks, means dividing said guideway into two parts, and a roller carrier having an L shapedextension slidably-retained in each part of said guideway.

9. In a door of the character described, a pair of spaced cooperating members se- 10. The combination with a car door, of means providing a guideway at one margin of the door, a carrier having means overlapping a portion of said guideway and slidably interlocked therein, an anti-friction means rotatably mounted in said carrier, a track for a supporting said door, said antl-frlctlon ty, Illinois. i

AXEL WASBERG.

KENNETH J. TOBIN.

cured to one margin of the door and de- 7 formed to providea guideway and a V- shaped track beyond said guideway, end closures for said guideway and means intermediate said guideway dividing the same in each part engaging said track and a retainer for each anti-friction element having a flanged portion slidable in said guideway. 

